We use java.numbers every day. But do you know how many different properties they have? Let's take a look at some of the amazing properties of java.numbers. After completing this project, you will write a program that knows how to determine whether a number is Palindromic or Gapful, or how to distinguish Spy java.numbers from others. Numbers can be fascinating!
In number theory, a happy number is a number that reaches 1 after a sequence during which the number is replaced by the sum of each digit squares. For example, 13 is a happy number, as 12 + 32 = 10 which leads to 12 + 02 = 1. On the other hand, 4 is not a happy number because the sequence starts with 42 = 16, 12 + 62 = 37, and finally reaches 22 + 02 = 4. This is the number that started the sequence, so the process goes on in an infinite cycle. A number that is not happy is called Sad (or Unhappy).
Our program is finished. It can indicate many interesting properties of java.numbers, it knows how to calculate them. Now, when prompted, a user can have a list of number properties. To complete the program, let's add an ability to exclude a property from the search query. If a user puts a minus (-) before the property, exclude this property from the search query. For example, if a user specifies palindromic -duck, it means that they are looking for Palindromic java.numbers that are not Ducks.
Your program should process the user requests. In this stage, your program should:
- Welcome users;
- Display the instructions;
- Ask for a request;
- If a user enters an empty request, print the instructions;
- If the user enters zero, terminate the program;
- If java.numbers are not natural, print the error message;
- If an incorrect property is specified, print the error message and the list of available properties;
- For one number, print the properties of the number;
- For two java.numbers, print the properties of all java.numbers in the list;
- For two java.numbers and two properties, print the list of java.numbers that contain the specified properties;
- If a property is preceded by a minus, this property should not be present in a number;
- If the user specifies mutually exclusive properties, abort the request and warn the user.
- Once the request is processed, continue execution from step 3.
In this stage, property names include even, odd, buzz, duck, palindromic, gapful, spy, sunny, square, jumping, sad, and happy. Mutually exclusive properties are even/odd, duck/spy, sunny/square, sad/happy pairs, as well as direct opposites (property and -property). The test won't check the order of properties, their indentation, and spaces. You may format java.numbers as you like.
Supported requests:
- enter a natural number to know its properties;
- enter two natural java.numbers to obtain the properties of the list:
* the first parameter represents a starting number;
* the second parameter shows how many consecutive java.numbers are to be printed;
- two natural java.numbers and properties to search for;
- a property preceded by minus must not be present in java.numbers;
- separate the parameters with one space;
- enter 0 to exit.The first parameter should be a natural number or zero.The second parameter should be a natural number.The property [SUN] is wrong.
Available properties:
[EVEN, ODD, BUZZ, DUCK, PALINDROMIC, GAPFUL, SPY, SQUARE, SUNNY, JUMPING, HAPPY, SAD]The properties [HOT, SUN] are wrong.
Available properties:
[EVEN, ODD, BUZZ, DUCK, PALINDROMIC, GAPFUL, SPY, SQUARE, SUNNY, JUMPING, HAPPY, SAD]The request contains mutually exclusive properties: [HAPPY, SAD]
There are no java.numbers with these properties.The request contains mutually exclusive properties: [-HAPPY, -SAD]
There are no java.numbers with these properties.The request contains mutually exclusive properties: [GAPFUL, -GAPFUL]
There are no java.numbers with these properties.The greater-than symbol followed by a space (> ) represents the user input. Note that it's not part of the input.
Example 1:
Welcome to Amazing Numbers!
Supported requests:
- enter a natural number to know its properties;
- enter two natural java.numbers to obtain the properties of the list:
* the first parameter represents a starting number;
* the second parameter shows how many consecutive java.numbers are to be processed;
- two natural java.numbers and properties to search for;
- a property preceded by minus must not be present in java.numbers;
- separate the parameters with one space;
- enter 0 to exit.
Enter a request: 1 10
1 is odd, palindromic, spy, square, jumping, happy
2 is even, palindromic, spy, jumping, sad
3 is odd, palindromic, spy, sunny, jumping, sad
4 is even, palindromic, spy, square, jumping, sad
5 is odd, palindromic, spy, jumping, sad
6 is even, palindromic, spy, jumping, sad
7 is odd, buzz, palindromic, spy, jumping, happy
8 is even, palindromic, spy, sunny, jumping, sad
9 is odd, palindromic, spy, square, jumping, sad
10 is even, duck, jumping, happy
Enter a request: 1 5 -odd
2 is even, palindromic, spy, jumping, sad
4 is even, palindromic, spy, square, jumping, sad
6 is even, palindromic, spy, jumping, sad
8 is even, palindromic, spy, sunny, jumping, sad
10 is even, duck, jumping, happy
Enter a request: 1 5 -even
1 is odd, palindromic, spy, square, jumping, happy
3 is odd, palindromic, spy, sunny, jumping, sad
5 is odd, palindromic, spy, jumping, sad
7 is odd, buzz, palindromic, spy, jumping, happy
9 is odd, palindromic, spy, square, jumping, sad
Enter a request: 1 5 -odd -even gapful
The request contains mutually exclusive properties: [-ODD, -EVEN]
There are no java.numbers with these properties.
Enter a request: 1 5 odd square -odd
The request contains mutually exclusive properties: [-ODD, ODD]
There are no java.numbers with these properties.
Enter a request: 1 5 sunny square
The request contains mutually exclusive properties: [SQUARE, SUNNY]
There are no java.numbers with these properties.
Enter a request: 1 5 -sunny -square
2 is even, palindromic, spy, jumping, sad
5 is odd, palindromic, spy, jumping, sad
6 is even, palindromic, spy, jumping, sad
7 is odd, buzz, palindromic, spy, jumping, happy
10 is even, duck, jumping, happyExample 2: Numbers that have one specified property
Enter a request: > 2000 5 happy
2,003 is odd, duck, happy
2,008 is even, duck, happy
2,019 is odd, duck, happy
2,026 is even, duck, happy
2,030 is even, buzz, duck, happyExample 3: Numbers with all specified properties
Enter a request: 1 5 even sunny happy -duck -gapful
3,968 is even, sunny, happy
34,224 is even, sunny, happy
75,624 is even, sunny, happy
134,688 is even, sunny, happy
178,928 is even, sunny, happy
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